github.com/sealerio/sealer@v0.11.1-0.20240507115618-f4f89c5853ae/utils/maps/maps.go (about) 1 // Copyright © 2022 Alibaba Group Holding Ltd. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package maps 16 17 // ConvertToSlice Use the equal sign to link key and value looks like key1=value1,key2=value2. 18 func ConvertToSlice(m map[string]string) []string { 19 result := []string{} 20 for k, v := range m { 21 result = append(result, k+"="+v) 22 } 23 return result 24 } 25 26 // Merge :get all elements, only insert key which is not in dst form src. 27 func Merge(dst, src map[string]string) map[string]string { 28 if len(dst) == 0 { 29 return Copy(src) 30 } 31 for srcEnvKey, srcEnvValue := range src { 32 if _, ok := dst[srcEnvKey]; ok { 33 continue 34 } 35 dst[srcEnvKey] = srcEnvValue 36 } 37 return dst 38 } 39 40 func Copy(origin map[string]string) map[string]string { 41 if origin == nil { 42 return nil 43 } 44 ret := make(map[string]string, len(origin)) 45 for k, v := range origin { 46 ret[k] = v 47 } 48 49 return ret 50 }